<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        let num1, num2, num3, num4, min
        num1 = 26
        num2 = 17
        num3 = 10
        num4 = 20

        if (num1 < num2 && num1 < num3 && num1 < num4) {
            alert(`${num1}`)
        } else if (num2 < num1 && num2 < num3 && num1 < num4) {
            alert(`${num2}`)
        } else if (num3 < num2 && num3 < num1 && num3 < num4) {
            alert(`${num3}`)
        } else {
            alert(`${num4}`)
        }
    </script>
</body>

</html>